Question

Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that the mean listening time for a sample of 13 men was 35 minutes per day. The standard deviation was 8 minutes per day. The mean listening time for a sample of 11 women was also 35 minutes, but the standard deviation of the sample was 18 minutes. At the 0.10 significance level, can we conclude that there is a difference in the variation in the listening times for men and women? (Round your answer to 3 decimal places.) The test statistic is?

Answer #1

Arbitron Media Research Inc. conducted a study of the iPod
listening habits of men and women. One facet of the study involved
the mean listening time. It was discovered that the mean listening
time for a sample of 13 men was 45 minutes per day. The standard
deviation was 11 minutes per day. The mean listening time for a
sample of 9 women was also 45 minutes, but the standard deviation
of the sample was 13 minutes. At the 0.10...

Arbitron Media Research Inc. conducted a study of the iPod
listening habits of men and women. One facet of the study involved
the mean listening time. It was discovered that the mean listening
time for a sample of 9 men was 33 minutes per day. The standard
deviation was 7 minutes per day. The mean listening time for a
sample of 21 women was also 33 minutes, but the standard deviation
of the sample was 18 minutes. At the 0.10...

Arbitron Media Research Inc. conducted a study of the iPod
listening habits of men and women. One facet of the study involved
the mean listening time. It was discovered that the mean listening
time for a sample of 11 men was 41 minutes per day. The standard
deviation was 17 minutes per day. The mean listening time for a
sample of 10 women was also 41 minutes, but the standard deviation
of the sample was 9 minutes. Use a two-tailed...

Arbitron Media Research Inc. conducted a study of the iPod
listening habits of men and women. One facet of the study involved
the mean listening time. It was discovered that the mean listening
time for a sample of 13 men was 30 minutes per day. The standard
deviation was 13 minutes per day. The mean listening time for a
sample of 11 women was also 30 minutes, but the standard deviation
of the sample was 14 minutes. At the 0.02...

Arbitron Media Research Inc. conducted a study of the iPod
listening habits of men and women. One facet of the study involved
the mean listening time. It was discovered that the mean listening
time for a sample of 13 men was 30 minutes per day. The standard
deviation was 13 minutes per day. The mean listening time for a
sample of 11 women was also 30 minutes, but the standard deviation
of the sample was 14 minutes. At the 0.02...

Arbitron Media Research Inc. conducted a study of the iPod
listening habits of men and women. One facet of the study involved
the mean listening time. It was discovered that the mean listening
time for a sample of 8 men was 34 minutes per day. The standard
deviation was 19 minutes per day. The mean listening time for a
sample of 10 women was also 34 minutes, but the standard deviation
of the sample was 7 minutes. At the 0.02...

A study was conducted to better understand the
television habits of married men and women during prime-time hours.
Based on past viewing records, the study determined that during
prime time, husbands are watching television 60% of the time. When
the husband is watching television, 40% of the time the wife is
also watching. When the husband is not watching television, 30% of
the time the wife is watching television.
(a) Find the probability that if the wife is watching television,...

Do men take a different amount of time than women to get out of
bed in the morning? The 42 men observed averaged 6.2 minutes to get
out of bed after the alarm rang. Their standard deviation was 2.7.
The 60 women observed averaged 5 minutes and their standard
deviation was 2.2 minutes. What can be concluded at the α = 0.10
level of significance? For this study, we should use The null and
alternative hypotheses would be: H 0...

A university investigation was conducted to determine whether
women and men complete medical school in significantly different
amounts of time, on the average. Two independent random samples
were selected and the following summary information concerning
times to completion of medical school computed. Perform the
appropriate test of hypothesis, at level 0.05 to determine whether
there is a significant difference in time to completion of medical
school between women and men.
Women
Men
Sample Size
90
100
Mean
8.4 years
8.5...

A questionnaire about study habits was given to a random sample
of students taking a large introductory stats class. The sample of
35 students reported that they spent an average of 115 minutes per
week studying stats. Assume that the standard deviation is 40
minutes.
A) Give a 95% confidence interval for the mean time spent
studying stats by students in this class.
B) Is it true that 95% of the students in the class have weekly
studying times that...

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